Update git submodules

* Update plugins/replication from branch 'stable-3.2'
  to bbb3bb300a7c9ab43ef7196fe366882a14f83487
  - PushOne: Don't call delta.add(ref) twice
    
    This is already called as part of the condition, it doesn't need to be
    called again inside the body.
    
    Change-Id: Ieb11f738534ed01d09125ac6ef325ee472cb0b44
    
diff --git a/plugins/replication b/plugins/replication
index 9fee431..bbb3bb3 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 9fee431456cf53f190bc34d1cb0a43c62a0c1c60
+Subproject commit bbb3bb300a7c9ab43ef7196fe366882a14f83487